14S HISTORY OF BRITISH CRUSTACEA. 



late Henry Goodsir, who named it after the Rev. Dr. 

 Fleming, Professor of Natural History in New College, 

 Edinburgh. He found it in shallow water. 



A species of the genus Thysanopoda has been found in 

 Britain — the T. Couchil : the gills in this are in the form 

 of plumes at the base of the feet ; the last pair of feet are 

 unbranched. The type of the genus was found in the At- 

 lantic Ocean. Professor Bell thus characterizes the 



Thysanopoda couchii, Bell. — Branchiae with only one 

 series of leaflets. Middle point of the trifid apex of the 

 central caudal lamina not half the length of the lateral 

 ones. 



Cornish coast (Mr. Couch) • found in the stomach of a 

 mackerel. 



Fam. DIASTYLIDJfi, Spence Bate. 

 Gen. 51. DIASTYLIS, Say. 



Carapace produced in front as a beak. Eyes confluent 

 on the top. Five segments of thorax exposed behind cara- 

 pace. Upper antenna short, scarcely reaching to the fore 

 margin of carapace. Lower antenna longer than the 

 upper. First five abdominal segments without appendages, 



